05/01/15

Astronauts are in space and the oxygen canisters stop working. How long can they live. How much oxygen is needed for 6 months?
Info:   12 people on spaceship   Inhale 78.04% nitrogen 21% oxygen 0.92% argon   Exhale 78.04% nitrogen 14.5% Oxygen 4% Carbon 1% argon and other gases
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